Lamp-globe attachment.



H. S. EVANS & W. F. M. HAWE.

LAMP GLOBE ATTACHMENT.

APPLTCATION FILED JAN.18,1916.

WITNESSES KWM.

UNITED STATES PATENT OFFICE.

HOWARD S. EVANS AND WILLIAM F. M. HAWE, OF PITTSBURGH, PENNSYLVANIA,

ASSIGNORS TO MACBETH-EVANS GLASS COMPANY, OF PITTSBURGH, PENNSYL- VANIA, A CORPORATION OF PENNSYLVANIA.

LAMP-GLOBE ATTACHMENT.

Specification of Letters Patent.

Patented July 25, 1916.

To all whom it may concern:

Be it known that we, HOWARD S. EvANs and WILLIAM F. M. HAWE, citizens of the,

United States, residing at Pittsburgh, in the State of Pennsylvania, have jointly invented a certain new and useful Lamp-Globe Attachment, of which the following is a specification.

Our invention relates generally to means for supporting lamp globes and shades, and particularly the so-called inverted globes; its primary objects being to provide for a ready and safe attachment of inverted globes to fixtures adapted for supporting other forms of lamp shades; and generally to provide a simple, efficient, and reliable holder for globes and shades, as will hereinafter appear.

The invention is illustrated in a preferred form in the accompanying drawing, in which,-

Figure 1 is a side elevation and partial vertical section of an electric lamp with our improvement applied thereto to support an inverted globe; Fig. 2 is a plan view of the globe holder itself; and Fig. 3 is a detail side elevation of the ointed arm of the holder.

The rapidly increasing vogue of the semitransparent globes and shades used in the socalled indirect system of lighting has rendered it very important to provide an attachment for supporting such globes from the ordinary lamp holders now in use, and without complicated metallic parts attached to the globe. For example, in the drawing we illustrate a common electric lamp socket 4:, which carries a dependent collar 5 in which there are radially placed set screws 6 designed to hold the ordinary shade with a small neck so as to cover the lamp 7 In order to support on such a holder, an inverted globe or shade, we provide a collar 8 in the form of a ring having a reentrant channel around it and a projecting flange 8 whichcan fit in the ordlnary socket ring 5 and be safely engaged by the set screws 6.

This supporting ring 8 we preferably provide with a set of rigid legs 9, 9, 10, which may be fixedly attached by rivets 9*. One of these legs however, as 10, may be made of a construct-ion to fold or shorten in order to get the three rigid arms within the annular recess 15 of a shade 14-. In the present instance the arm 10 has an outward extension 1O pivoted to it by a rivet 11, and having an elongated end 12 adapted to fold down into proper llne against an abutment formed by slotting the parts 10 and 10, and when folded down in line with the part 10 the extension 12 can be firmly held in place by means of a sliding sleeve 13 which thus covers the end 12 of the movable part 10 as Wlll be obvious from the drawing. Of course then the fixture may readily be secured to any support having radial fingers such as the set screws 6, and any form of globe canbe hung on the fixture by breakng the olnt 11 of the leg 10, 10 and inserting the three legs 9, 9, 10 in any overhung part of the globe, after which the pointed arrn 10 1s properly alined and secured in position as by the sliding sleeve 13. WVe are of course not confined to this particular mode of shortening or breaking the adjustable leg of the fixture.

The attachment as shown assembled in Fig. 1 thus gives a secure and readily removable support to the globe without the use of any unsightly metal parts on the globe itself or making the attachment in any wise conspicuous.

Other advantages will readily occur to 1 those familiar with the art.

Having thus described our invention, what we claim is the following:

1. A shade holder comprising a rigid grooved ring, two rigid supporting arms attached to the ring, and a third arm composed of two parts pivoted together and provided with means to hold the parts rigidly in alined position, substantially as described.

2. A lamp globe and-holder comprising a globe having an interior circumferential flange, a metal frame having an exterior reentrant circumferential groove adapted to fit inside a socket provided with radial holding screws and havin several rigid arms adapted to engage the interior flange of the globe, one of said arms being composed of two pivoted parts and having means to hold said parts in alinement.

In testimony whereof we have hereunto signed our names.

HOWARD S. EVANS. WILLIAM F. M. HAWE. 

